I came across this and thought it was an insightful point about the genealogies of scripture which we tended to pass over
A key purpose of genealogies in some contexts is to show a divine purpose that moves history to a specific goal. It is easier to see the big picture when a wide-angle lens is used to look at the canon. Genesis begins with Adam, and the storyline quickly progresses through history, using genealogies, until Abraham arrives on the historical scene. The storyline follows Abraham and his descendants, and Genesis closes with Abraham’s grandson predicting that an individual from the family of a great grandson (Judah) would wield a ruling sceptre over all the nations and preside over an astonishingly fertile land (Ge. 49:8-12).
Stephen G. Dempster, Dominion and Dynasty: A Theology of the Hebrew Bible, p. 47-48.
This is not to say every genealogy fits this model, they are different for different contexts. It does, instead, at least instruct us that there are purposes in the genealogies. The authors under the direction of The Author had reasons for putting them in. It is our task and joy to explore and discover what those reasons are.